Secretion of thyroid-stimulating hormone is controlled by which gland?

Study for the ARRT Ultrasound Test. Engage with flashcards and multiple choice questions, each question offers hints and detailed explanations. Prepare thoroughly for your certification exam!

Multiple Choice

Secretion of thyroid-stimulating hormone is controlled by which gland?

Explanation:
TSH is produced by the anterior pituitary, but its release is controlled by the hypothalamus. The hypothalamus secretes thyrotropin-releasing hormone (TRH), which travels to the anterior pituitary and stimulates it to secrete TSH. This links the brain’s regulatory center to the thyroid gland: when thyroid hormone levels are low, TRH (and thus TSH) increase to boost thyroid output; when thyroid hormones are high, feedback reduces TRH and TSH.

TSH is produced by the anterior pituitary, but its release is controlled by the hypothalamus. The hypothalamus secretes thyrotropin-releasing hormone (TRH), which travels to the anterior pituitary and stimulates it to secrete TSH. This links the brain’s regulatory center to the thyroid gland: when thyroid hormone levels are low, TRH (and thus TSH) increase to boost thyroid output; when thyroid hormones are high, feedback reduces TRH and TSH.

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